3 Kreuzer Prussian blue on white, numeral in interrupted circle (I), plate 1, extra-wide margins with cutting lines on two sides, full margins at bottom and right, fresh colours and clean, almost ideally central clear closed millwheel cancellation "310" SCHROBENHAUSEN, perfect condition, expertised Brettl BPP, Peter Sem BPP short opinion (2017) "faultless", outstanding example without reservations